DE1039943B - Centrifugal oil cleaner - Google Patents

Description

GERMAN

The invention relates to a centrifugal oil cleaner. It is known, centrifugal oil cleaner with a rotatable, a centrifugal chamber forming Provided drum and the drum through the one or more reaction nozzles tangentially to drive oil flowing through the drum.

In the known oil cleaners of this type, the oil is fed to the reaction nozzles through pipes which are in are inserted in the floor or in the wall of the centrifugal drum. The pipes take in the oil a point which is at a considerable distance from the drum axis, so that that through the nozzles flowing oil is insufficiently cleaned and can clog the nozzles.

One has therefore tried to use the already purified oil to operate the reaction nozzles by inserting an oil feed pipe on the same axis as the drum with one or more entry openings near their end and at a distance from the inlet openings one of this pipe is concentric surrounding oil outlet has been provided, which connects the centrifugal chamber with a Produces outlet chamber which contains the reaction nozzles. The outlet opening is on these cleaners central; however, most of the oil flows directly when it enters the centrifugal chamber the outlet opening so that it is not exposed to the action of centrifugal force long enough. These cleaners have therefore also proven to be insufficiently effective.

A significantly better cleaning is achieved if, according to the invention, the outlet opening of the one end of a pipe section is formed which surrounds the oil supply channel concentrically and from which the end of the centrifugal chamber lying opposite the inlet openings protrudes into the chamber, to direct the oil from the centrifugal chamber into the discharge chamber. By arranging a Such a pipe section creates a zone in the centrifugal chamber through which the oil only flows slowly, so that it is exposed to the action of centrifugal force for a long time and consequently a experiences very effective cleaning.

In general, the nozzle or nozzles will be in the bottom part of the centrifugal chamber or in its Near and the inlet opening or openings near the top of the Provide centrifugal chamber. A particularly good cleaning effect is achieved if that is to lead out of the oil from the centrifugal chamber serving pipe section is chosen so long that the outlet opening from the bottom of the centrifugal chamber by a distance that is one-third to one-half corresponds to the distance.

Centrifugal oil cleaner

Applicant:

The Glacier Metal Company Limited,

Alperton, Wembley, Middlesex

(Great Britain)

Representative: Dr.-Ing. F. Wuesthoff, Dipl.-Ing. G. Pulse

and Dipl.-Chem. Dr. rer. nat. E. Frhr. v. Bad luck man,

Patent Attorneys, Munich 9, Schweigerstr. 2

Claimed priority:
Great Britain 5 February 1954

Anthony Edgerton Burke,

Alperton, Wembley, Middlesex (Great Britain),
has been named as the inventor

The invention is explained in more detail below with reference to a schematic drawing of an exemplary embodiment.

Fig. 1 shows a centrifugal oil cleaner according to the invention in section, parts of this section in two different levels lie, as indicated in Figure 2 by the line I-I;

Fig. 2 shows the underside of the drum of the oil cleaner shown in Fig. 1;

FIG. 3 is a cross section taken along line 3-3 in FIG. 1.

The centrifugal oil cleaner shown comprises a stationary housing with a base part A of disk-shaped shape, which has a downwardly projecting tubular foot A ^x with a circular flange ^ ² , with which the base part on a mounting surface of a motor or other device, in which the oil cleaner to be used can be attached; Furthermore, the housing comprises a bell A ³ , the lower edge of which is connected to the base A in an oil-tight manner. At the top of the base A there is a shoulder A * , the bore of which is directly connected to an oil inlet channel A ^ in the base. An upwardly projecting tube B is rigidly connected to the approach A ^i. The inside of this pipe is therefore with the inlet

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channel A ⁵ in connection. A screw bolt C extends through the tube B , the lower end of which is held by a nut C ¹ which is firmly inserted into a recess in the base part A , while the head of the screw bolt presses on the upper side of the bell A ^{3 via a washer,} so that the latter is held firmly in place, resulting in a liquid-tight seal between the lower edge of the bell and the base A. The interior of the base part A ¹ is in communication with the interior of the housing through an opening A ^{6 (FIG. 3).}

A centrifugal drum is rotatably mounted on the pipe B. The centrifugal drum consists of a disc-shaped base E, the edge of which is designed as an annular channel which receives a sealing ring F , and an upper component which comprises a cylindrical wall E ¹ and a cover E ² forming one piece with this. In the middle of the ceiling E ² and in the middle of the bottom part E , bearing bushings G and G ¹ are arranged, which run on the pipe B. The lower bearing G ¹ has a flange which rests on a pressure piece G ^{2 which} is inserted into the upper end of the extension A *. The lower part of the shell E \ of the drum has a slightly larger diameter, so that a shoulder E ^s is created. Between this shoulder and the sealing ring F lies the edge of an annular disc H which forms a partition wall extending through the interior of the drum and is provided in the middle with an upwardly projecting tube H ¹ .

The tube B has in the vicinity of its upper end openings B ¹ through which the oil enters the centrifugal drum, on the bottom part E of the drum protrusions E * pushed out are arranged, and a nozzle bore E ^{s is} provided in each of these protrusions, through which the oil is ejected in a tangential direction into the surrounding housing, so that the protrusions £ ⁴ pressed out act as nozzles.

The upper part of the drum is / are held together with the bottom part by two bolts which are arranged as shown in Fig. 1 and 2 way so that it is possible by loosening the nuts J ^1, to separate the two parts of the centrifugal drum from each other to remove solid matter that has accumulated in the drum.

The tube H ¹ forms the outlet channel for the oil leaving the centrifugal drum, it protrudes up to a height which corresponds to about two fifths of the height of the interior of the drum. The tube communicates at its lower end with a chamber which is located between the disk H and the bottom part E of the drum, and the nozzle bores E ^{5 are} provided in this chamber. During operation, the oil supplied through the inlet channel A ⁵ thus flows upward through the pipe B and through the inlet openings B ¹ into the interior of the drum until the drum is filled so far that oil flows through the pipe H ¹ , which is the outlet channel forms, flows downwards and passes through the nozzle bores E ^s to the outside, the reaction forces caused by the oil jets set the drum in rotation.

The greater part of the oil entering the drum flows relatively quickly from the inlet openings B ¹ - / MT outlet opening at the upper end of the pipe: - H ¹ and then passes through this pipe to the nozzle bores, where it is sprayed out after it is has only been in the drum for a relatively short time, but this time is sufficient to allow all larger foreign bodies to be removed from the oil by centrifugal force. A smaller part of the oil remains in the vicinity of the outer wall of the upper part of the drum for a long time before this oil enters the upper end of the tube H ¹ , so that smaller foreign bodies can be separated out by the action of centrifugal force. An even smaller portion of the oil entering the drum flows into the lower part of the centrifugal drum on the circumference of the tube H ¹ , where the oil remains relatively motionless, so that this oil remains in the drum for an even longer time before it passes through the upper one End of the tube H ¹ flows off.

As can also be seen from the drawing, by changing the length of the pipe H ^{1 it is} easily possible to change the comparatively stagnant amount of oil and in this way to achieve the most favorable degree of purification for certain operating conditions.

Furthermore, by changing the diameter of the tube H ^{1, it is} possible to change the percentage of dirt particles entering the outlet channel, because during the average period of time during which liquid remains in the chamber, these particles are released under the influence of centrifugal force inside the chamber hike. If, therefore, with a given area of the outlet opening at the upper end of the outlet channel, this opening is arranged as close as possible to the axis of the rotor, then in comparison to other arrangements in which the outlet openings are further away from the axis of the chamber, a increased separation efficiency. It can be seen that the outlet channel in the arrangement according to the invention does not significantly limit the performance of the oil cleaner in that the channel occupies a larger part of the space within the centrifugal chamber in which considerable centrifugal forces are effective to separate dirt particles from the oil.

Claims (3)

Patent claims: 1. Centrifugal oil cleaner with a rotating drum in a housing, forming a centrifugal chamber, which is driven by the oil flowing out of the drum tangentially from one or more reaction nozzles, and a coaxial oil feed channel with one or more inlet openings located near one end and one comprising oil supply passage concentrically surrounding and situated at a distance from the inlet openings oil discharge port that directs the cleaned oil from the centrifugal chamber into a provided with the reaction nozzle outlet, characterized in that the outlet opening of the one end of the oil feed pipe (B) concentrically surrounding the tube (H ¹ ) is formed, which protrudes from the opposite end of the centrifugal chamber to the inlet openings (B ¹ ) into the chamber and directs the oil into the outlet chamber. 2. Centrifugal oil cleaner according to claim 1, characterized in that the inlet openings (B ¹ ) are arranged in the vicinity of the upper end of the centrifugal chamber. 3. Centrifugal oil cleaner according to claim 1 or 2, characterized in that the outlet opening is at a point from the opposite end of the inlet openings The centrifugal chamber is removed a distance that is one-third to one-half the distance corresponds between this end of the centrifugal chamber and the inlet openings. References considered: British Patent No. 723,339. 1 sheet of drawings © 80Ϊ 639/16 »9, ES